About the difference between HMC1118 chip storage and channel temperature

I used a 150°C heat gun to heat up the HMC1118 chip for a minute recently and quickly found that nearly half of the IC was blown, which showed a significant drop in insertion loss performance and return loss performance. Should I heat up the chip at a temperature lower than the channel temperature or the memory temperature? If the storage temperature indicates the temperature at which the IC can be stored for a long time, is 135 the maximum operating temperature of the IC?